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| author | Alan Modra <amodra@gmail.com> | 2018-10-23 18:29:24 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2018-10-23 21:09:09 +1030 |
| commit | ab419ddbb2cdd17ca83618990f2cacf904ce1d61 (patch) | |
| tree | 22f6defa1dee801d2e582c4922d33a7a0dc017ca | |
| parent | 8e3152af14a91df65af8e922a0e8e77c60ed99ba (diff) | |
| download | gdb-ab419ddbb2cdd17ca83618990f2cacf904ce1d61.zip gdb-ab419ddbb2cdd17ca83618990f2cacf904ce1d61.tar.gz gdb-ab419ddbb2cdd17ca83618990f2cacf904ce1d61.tar.bz2 | |
PR23804, buffer overflow in sec_merge_hash_lookup
PR 23804
* merge.c (_bfd_add_merge_section): Don't attempt to merge
sections where size is not a multiple of entsize.
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/merge.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 31ff3d6..da423b1 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2018-10-23 Alan Modra <amodra@gmail.com> + + PR 23804 + * merge.c (_bfd_add_merge_section): Don't attempt to merge + sections where size is not a multiple of entsize. + 2018-10-20 Alan Modra <amodra@gmail.com> PR 23788 diff --git a/bfd/merge.c b/bfd/merge.c index 7904552..5e3bba0 100644 --- a/bfd/merge.c +++ b/bfd/merge.c @@ -376,6 +376,9 @@ _bfd_add_merge_section (bfd *abfd, void **psinfo, asection *sec, || sec->entsize == 0) return TRUE; + if (sec->size % sec->entsize != 0) + return TRUE; + if ((sec->flags & SEC_RELOC) != 0) { /* We aren't prepared to handle relocations in merged sections. */ |